Alert archive / Missouri / Vernon County
Weather alerts in Vernon County, Missouri, 2020
161 weather alerts in 2020, from the National Weather Service and the Storm Prediction Center. An alert counts here when it covered this county.
Vernon County and its neighbors
Each county as a circle sized by its count in 2020. Tap one for its archive.
- Alerts
- 161
- Warnings
- 62
- Watches
- 22
- Advisories
- 43
- Busiest month
- May36 alerts
- Busiest day
- May 4, 202011 alerts
Over time
By month
Warning verification
How often warnings here had a storm report inside them, and how much warning the reports had.
0 of 2 tornado warnings covering Vernon County in 2020 had a tornado report inside them.
Vernon County, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| Tornado warnings | 2 | 0 | 100% | 0 | ||
| Severe thunderstorm warnings | 12 | 7 | 42% | 11 | 55% | 21 min |
| Flash flood warnings | 3 | 0 | 100% | 0 |
Each office's whole area, 2020
| Warnings | With a report | False alarm ratio | Reports | Inside a warning | Mean lead time | |
|---|---|---|---|---|---|---|
| NWS Springfield, MO: tornado warnings | 27 | 1 | 96% | 4 | 50% | 5 min |
| NWS Springfield, MO: severe thunderstorm warnings | 281 | 167 | 41% | 499 | 88% | 21 min |
| NWS Springfield, MO: flash flood warnings | 58 | 41 | 29% | 171 | 88% | 207 min |
An office's figures cover every county it serves, including across state lines.
Verified by the Iowa Environmental Mesonet's Cow, which matches each storm-based warning with the local storm reports inside its polygon while it was in force, within 15 km of its edge: a tornado warning counts as verified on a tornado report, a severe thunderstorm warning on hail of 1 inch or more, a gust of 58 mph or more, or wind damage, a flash flood warning on a flash flood report. The false alarm ratio is the share of warnings with no such report; "inside a warning" is the probability of detection, the share of reports that fell inside one; lead time runs from the warning's issue to each report inside it, counting zero for a report that came first. A warning with no report is not proof nothing happened: reports come from spotters, the public and damage surveys, and are thin where few people live.
The alerts
Every alert, in the order issued. Times are local, Central Time. Each opens its own page with the text, the map, the radar and the sounding.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jan 8, 2:15 PM CST | Flash Flood Watch | SGF | 62 hr |
| Jan 9, 10:32 AM CST | River Flood Warning | SGF | 6 days |
| Jan 9, 3:40 PM CST | Winter Storm Watch | SGF | 11 hr |
| Jan 10, 2:55 AM CST | Winter Storm Warning | SGF | 39 hr |
| Jan 10, 9:14 AM CST | River Flood Warning | SGF | 4 days |
| Jan 10, 12:11 PM CST | Mesoscale Discussion | SPC | 2 hr |
| Jan 10, 1:23 PM CST | Severe Thunderstorm Warning | SGF | 52 min |
| Jan 10, 1:42 PM CST | Tornado Warning | SGF | 33 min |
| Jan 10, 6:58 PM CST | Areal Flood Warning | SGF | 12 hr |
| Jan 11, 8:32 AM CST | Areal Flood Warning | SGF | 24 hr |
| Jan 12, 10:37 PM CST | Dense Fog Advisory | SGF | 8 hr |
| Jan 16, 2:22 AM CST | Flood Watch | SGF | 52 hr |
| Jan 16, 3:03 AM CST | Winter Weather Advisory | SGF | 41 hr |
| Jan 16, 9:14 AM CST | River Flood Warning | SGF | 4 days |
| Jan 16, 11:17 PM CST | Mesoscale Discussion | SPC | 4 hr |
| Jan 17, 3:20 AM CST | Mesoscale Discussion | SPC | 6 hr |
| Jan 18, 1:15 AM CST | Areal Flood Warning | SGF | 12 hr |
| Jan 18, 1:27 AM CST | River Flood Warning | SGF | 55 hr |
| Jan 18, 12:50 PM CST | Areal Flood Advisory | SGF | 10 hr |
| Jan 21, 2:55 PM CST | Winter Weather Advisory | SGF | 21 hr |
| Jan 23, 3:17 AM CST | Winter Weather Advisory | SGF | 36 hr |
| Jan 26, 8:47 PM CST | Dense Fog Advisory | SGF | 13 hr |
| Jan 28, 3:09 AM CST | Winter Weather Advisory | SGF | 33 hr |
| Feb 4, 3:51 AM CST | Winter Storm Watch | SGF | 12 hr |
| Feb 4, 3:51 AM CST | Winter Weather Advisory | SGF | 53 hr |
| Feb 4, 3:28 PM CST | Winter Storm Warning | SGF | 23 hr |
| Feb 5, 2:30 PM CST | Winter Weather Advisory | SGF | 13 hr |
| Feb 11, 2:49 PM CST | Winter Weather Advisory | SGF | 33 hr |
| Feb 22, 2:54 AM CST | Flood Watch | SGF | 63 hr |
| Feb 22, 9:00 AM CST | River Flood Warning | SGF | 6 days |
| Feb 22, 9:00 AM CST | River Flood Warning | SGF | 6 days |
| Feb 23, 7:07 PM CST | River Flood Warning | SGF | 5 days |
| Feb 23, 7:07 PM CST | River Flood Warning | SGF | 5 days |
| Feb 24, 5:42 AM CST | Areal Flood Warning | SGF | 9 hr |
| Feb 24, 3:03 PM CST | Areal Flood Advisory | SGF | 12 hr |
| Mar 5, 3:05 AM CST | Red Flag Warning | SGF | 15 hr |
| Mar 7, 3:19 AM CST | Red Flag Warning | SGF | 15 hr |
| Mar 8, 3:53 AM CDT | Red Flag Warning | SGF | 15 hr |
| Mar 9, 3:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 11, 4:27 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 11, 1:23 PM CDT | River Flood Warning | SGF | 16 days |
| Mar 11, 9:02 PM CDT | River Flood Warning | SGF | 47 hr |
| Mar 15, 7:07 AM CDT | River Flood Warning | SGF | 24 hr |
| Mar 16, 8:20 AM CDT | River Flood Warning | SGF | 11 days |
| Mar 16, 8:25 PM CDT | River Flood Warning | SGF | 21 days |
| Mar 20, 10:32 AM CDT | Areal Flood Advisory | SGF | 48 hr |
| Mar 24, 7:40 AM CDT | Areal Flood Advisory | SGF | 5 hr |
| Mar 24, 7:54 AM CDT | Flash Flood Warning | SGF | 109 min |
| Mar 27, 3:45 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Mar 27, 8:33 PM CDT | Mesoscale Discussion | SPC | 87 min |
| Mar 28, 3:41 AM CDT | Wind Advisory | SGF | 15 hr |
| Mar 28, 7:05 AM CDT | Mesoscale Discussion | SPC | 85 min |
| Mar 28, 7:09 AM CDT | Special Weather Statement | SGF | 51 min |
| Apr 3, 8:09 PM CDT | Freeze Warning | SGF | 13 hr |
| Apr 9, 2:57 AM CDT | Freeze Warning | SGF | 29 hr |
| Apr 12, 3:57 AM CDT | Freeze Warning | SGF | 30 hr |
| Apr 12, 3:57 AM CDT | Wind Advisory | SGF | 27 hr |
| Apr 12, 11:21 AM CDT | Severe Thunderstorm Warning | SGF | 29 min |
| Apr 13, 3:05 PM CDT | Freeze Warning | SGF | 18 hr |
| Apr 17, 10:54 AM CDT | Freeze Warning | SGF | 22 hr |
| Apr 23, 2:19 PM CDT | River Flood Warning | SGF | 4 days |
| Apr 24, 9:28 AM CDT | River Flood Warning | SGF | 47 hr |
| Apr 24, 9:28 AM CDT | River Flood Warning | SGF | 4 days |
| Apr 24, 12:35 PM CDT | Flood Watch | SGF | 20 hr |
| Apr 24, 7:13 PM CDT | Severe Thunderstorm Warning | SGF | 62 min |
| Apr 25, 3:12 AM CDT | Areal Flood Advisory | SGF | 12 hr |
| Apr 28, 1:55 PM CDT | Mesoscale Discussion | SPC | 3 hr |
| Apr 28, 3:18 PM CDT | Tornado Watch | SPC | 8 hr |
| May 3, 8:34 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 3, 8:53 AM CDT | Severe Thunderstorm Warning | SGF | 52 min |
| May 3, 9:45 AM CDT | Severe Thunderstorm Warning | SGF | 11 min |
| May 4, 5:50 AM CDT | Mesoscale Discussion | SPC | 55 min |
| May 4, 6:33 AM CDT | Severe Thunderstorm Watch | SPC | 12 hr |
| May 4, 8:26 AM CDT | River Flood Warning | SGF | 3 days |
| May 4, 8:26 AM CDT | River Flood Warning | SGF | 5 days |
| May 4, 9:00 AM CDT | Mesoscale Discussion | SPC | 90 min |
| May 4, 10:04 AM CDT | Severe Thunderstorm Warning | SGF | 56 min |
| May 4, 10:38 AM CDT | Mesoscale Discussion | SPC | 97 min |
| May 4, 11:03 AM CDT | Severe Thunderstorm Warning | SGF | 42 min |
| May 4, 11:37 AM CDT | Tornado Warning | SGF | 11 min |
| May 4, 12:25 PM CDT | Severe Thunderstorm Warning | SGF | 65 min |
| May 4, 1:04 PM CDT | Mesoscale Discussion | SPC | 86 min |
| May 8, 3:51 AM CDT | Frost Advisory | SGF | 27 hr |
| May 13, 12:58 PM CDT | Areal Flood Warning | SGF | 18 hr |
| May 14, 3:12 AM CDT | Flash Flood Watch | SGF | 33 hr |
| May 14, 7:22 AM CDT | River Flood Warning | SGF | 5 days |
| May 14, 9:50 AM CDT | River Flood Warning | SGF | 4 days |
| May 14, 1:41 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 10:58 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| May 14, 11:17 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| May 15, 1:04 AM CDT | Severe Thunderstorm Warning | SGF | 41 min |
| May 15, 1:06 AM CDT | Mesoscale Discussion | SPC | 114 min |
| May 15, 2:01 AM CDT | Flash Flood Warning | SGF | 6 hr |
| May 22, 8:48 AM CDT | Special Weather Statement | SGF | 57 min |
| May 22, 8:59 PM CDT | River Flood Warning | SGF | 9 days |
| May 25, 2:51 AM CDT | Flash Flood Watch | SGF | 28 hr |
| May 25, 2:15 PM CDT | Mesoscale Discussion | SPC | 90 min |
| May 25, 7:44 PM CDT | River Flood Warning | SGF | 6 days |
| May 25, 7:44 PM CDT | River Flood Warning | SGF | 5 days |
| May 25, 8:36 PM CDT | Severe Thunderstorm Watch | SPC | 3 hr |
| May 25, 10:36 PM CDT | Mesoscale Discussion | SPC | 54 min |
| May 26, 3:59 AM CDT | Areal Flood Advisory | SGF | 8 hr |
| May 26, 12:00 PM CDT | Areal Flood Advisory | SGF | 23 hr |
| May 29, 9:04 AM CDT | River Flood Warning | SGF | 4 days |
| Jun 4, 12:54 AM CDT | Mesoscale Discussion | SPC | 96 min |
| Jun 4, 2:07 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Jun 4, 3:06 AM CDT | Special Weather Statement | SGF | 54 min |
| Jun 4, 3:21 AM CDT | Severe Thunderstorm Warning | SGF | 54 min |
| Jun 4, 3:32 AM CDT | Mesoscale Discussion | SPC | 88 min |
| Jun 4, 4:13 AM CDT | Severe Thunderstorm Warning | SGF | 47 min |
| Jun 4, 5:38 AM CDT | Flash Flood Warning | SGF | 9 hr |
| Jun 5, 3:31 AM CDT | Mesoscale Discussion | SPC | 89 min |
| Jun 5, 3:41 AM CDT | Severe Thunderstorm Watch | SPC | 4 hr |
| Jun 5, 2:37 PM CDT | Heat Advisory | SGF | 28 hr |
| Jun 9, 2:57 AM CDT | Wind Advisory | SGF | 28 hr |
| Jun 28, 8:43 AM CDT | River Flood Warning | SGF | 4 days |
| Jun 30, 3:07 AM CDT | Heat Advisory | SGF | 17 hr |
| Jun 30, 2:48 PM CDT | Heat Advisory | SGF | 29 hr |
| Jul 1, 2:49 PM CDT | Heat Advisory | SGF | 28 hr |
| Jul 3, 5:42 PM CDT | Special Weather Statement | SGF | 48 min |
| Jul 3, 6:30 PM CDT | Special Weather Statement | SGF | 45 min |
| Jul 9, 1:09 AM CDT | Severe Thunderstorm Watch | SPC | 11 hr |
| Jul 9, 3:10 AM CDT | Mesoscale Discussion | SPC | 2 hr |
| Jul 11, 3:07 PM CDT | Mesoscale Discussion | SPC | 83 min |
| Jul 11, 3:36 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
| Jul 14, 2:28 AM CDT | Heat Advisory | SGF | 17 hr |
| Jul 17, 3:30 AM CDT | Heat Advisory | SGF | 18 hr |
| Jul 17, 3:30 AM CDT | Heat Advisory | SGF | 65 hr |
| Jul 31, 3:08 AM CDT | Flash Flood Watch | SGF | 17 hr |
| Aug 9, 1:21 PM CDT | Areal Flood Advisory | SGF | 2 hr |
| Aug 9, 5:34 PM CDT | Mesoscale Discussion | SPC | 116 min |
| Aug 10, 2:38 PM CDT | Mesoscale Discussion | SPC | 2 hr |
| Aug 10, 5:26 PM CDT | Severe Thunderstorm Warning | SGF | 64 min |
| Aug 28, 5:29 AM CDT | Dense Fog Advisory | SGF | 4 hr |
| Aug 31, 8:41 AM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
| Aug 31, 11:04 AM CDT | Mesoscale Discussion | SPC | 86 min |
| Sep 3, 12:40 AM CDT | Dense Fog Advisory | SGF | 8 hr |
| Sep 8, 3:01 PM CDT | Mesoscale Discussion | SPC | 119 min |
| Oct 11, 1:38 PM CDT | Wind Advisory | SGF | 16 hr |
| Oct 12, 1:11 PM CDT | Red Flag Warning | SGF | 3 hr |
| Oct 13, 2:17 PM CDT | Fire Weather Watch | SGF | 13 hr |
| Oct 14, 2:55 AM CDT | Red Flag Warning | SGF | 15 hr |
| Oct 15, 2:26 AM CDT | Frost Advisory | SGF | 31 hr |
| Oct 16, 3:30 AM CDT | Fire Weather Watch | SGF | 11 hr |
| Oct 16, 2:16 PM CDT | Red Flag Warning | SGF | 29 hr |
| Oct 16, 2:27 PM CDT | Wind Advisory | SGF | 28 hr |
| Oct 21, 3:07 PM CDT | Wind Advisory | SGF | 26 hr |
| Oct 23, 2:29 PM CDT | Freeze Warning | SGF | 13 hr |
| Oct 25, 2:50 PM CDT | Winter Weather Advisory | SGF | 40 hr |
| Nov 6, 6:30 AM CST | Dense Fog Advisory | SGF | 113 min |
| Nov 14, 10:23 AM CST | Wind Advisory | SGF | 8 hr |
| Nov 14, 4:46 PM CST | Mesoscale Discussion | SPC | 29 min |
| Nov 14, 5:14 PM CST | Tornado Watch | SPC | 8 hr |
| Nov 14, 7:34 PM CST | Mesoscale Discussion | SPC | 86 min |
| Nov 18, 2:11 AM CST | Red Flag Warning | SGF | 16 hr |
| Nov 18, 1:20 PM CST | Wind Advisory | SGF | 29 hr |
| Nov 22, 11:33 PM CST | Dense Fog Advisory | SGF | 11 hr |
| Nov 26, 2:11 AM CST | Dense Fog Advisory | SGF | 8 hr |
| Dec 18, 9:50 AM CST | Wind Advisory | SGF | 7 hr |
| Dec 22, 3:06 PM CST | Wind Advisory | SGF | 12 hr |
| Dec 23, 2:39 AM CST | Wind Advisory | SGF | 15 hr |
By product
Every kind of product issued here, grouped by hazard. Each opens the same place narrowed to that product.
| Product | Alerts |
|---|---|
| Severe storms | |
| Severe Thunderstorm Warning | 12 |
| Tornado Warning | 2 |
| Severe Thunderstorm Watch | 9 |
| Tornado Watch | 2 |
| Mesoscale Discussion | 29 |
| Special Weather Statement | 5 |
| Flooding | |
| Areal Flood Warning | 5 |
| Flash Flood Warning | 3 |
| River Flood Warning | 25 |
| Flash Flood Watch | 4 |
| Flood Watch | 3 |
| Areal Flood Advisory | 8 |
| Winter | |
| Winter Storm Warning | 2 |
| Winter Storm Watch | 2 |
| Winter Weather Advisory | 8 |
| Heat | |
| Heat Advisory | 7 |
| Cold | |
| Freeze Warning | 6 |
| Frost Advisory | 2 |
| Wind and dust | |
| Wind Advisory | 11 |
| Fire | |
| Red Flag Warning | 7 |
| Fire Weather Watch | 2 |
| Fog and smoke | |
| Dense Fog Advisory | 7 |
The busiest days
Days with the most alerts issued, by UTC date.
Nearby
Alerts in force nowTornadoes on recordForecastThe radar archive20192021
Sources
National Weather Service watches, warnings, advisories and statements from the Iowa Environmental Mesonet's VTEC archive, which reconstructs tornado, severe thunderstorm, flash flood and marine warnings back to 1986 from the NWS text archive. Storm Prediction Center watches and mesoscale discussions from SPC's archive through the Mesonet. County centers from the US Census Bureau. Warning verification from the Mesonet's Cow. Rebuilt daily.